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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Tropea, Cameron
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Topics
Publications (8/8 displayed)
- 2024Experimental insights into the supersonic close-coupled atomization process employed for metal powder productioncitations
- 2023Experimental investigation of a supersonic close-coupled atomizer employing the phase Doppler measurement techniquecitations
- 2022An imaging technique for determining the volume fraction of two-component droplets of immiscible fluidscitations
- 2022Modeling of the Characteristic Size of Drops in a Spray Produced by the Supersonic Gas Atomization Process
- 2022Application of the Phase Doppler Measurement Technique for the Characterization of Supersonic Gas Atomization
- 2021Experimental Investigation of a Close-coupled Atomizer Using the Phase Doppler Measurement Techniquecitations
- 2019Supercooled Water Drops Do Not Freeze During Impact on Hybrid Janus Particle-Based Surfacescitations
- 2001Outcomes from a drop impact on solid surfaces
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document
Modeling of the Characteristic Size of Drops in a Spray Produced by the Supersonic Gas Atomization Process
Abstract
Liquid atomization using supersonic gas flows is a common process in many industrial applications, one example being the atomization of liquid metals. In the present experimental and analytical work, a modeling approach for the characteristic size of drops in sprays produced by means of supersonic gas atomization has been developed. Local drop size distributions within the spray produced by a generic close-coupled atomizer operated with air have been obtained using the phase Doppler measurement technique. In order to investigate the importance of the liquid properties for the atomization process, water as well as two different aqueous glycerol solutions have been considered. No significant influence of the liquid dynamic viscosity on the drop size within the spray has been observed. Employing the chaotic disintegration theory, a characteristic length scale has been derived as a function of the deformation Weber number. The corresponding liquid deformation velocity has been estimated by describing the formation of a shock wave in the gas stream during the initial interaction of a liquid volume and a supersonic gas flow. Furthermore, a semi-empirical model based on the liquid Weber number has been proposed taking into account macroscopic effects at scales comparable to the size of the liquid jet. The correlation has been found to agree very well with the obtained experimental data.